Periodic Reporting for period 2 - DEMOGRAVI3 (Demonstration of the GRAVI3 technology – innovative gravity foundation for offshore wind)
Reporting period: 2017-11-01 to 2018-12-31
In particular, the DEMOGRAVI3 project will demonstrate an innovative hybrid concrete-steel, self-buoyant bottom standing gravity based foundation (GBF) for offshore wind farms positioned in water depths between 35 and 60m. The complete unit (turbine and foundation) will be built and assembled onshore and towed while floating to the deployment site, where it will be submerged by an innovative patented process on a controlled way without the need for external support or heavy lift vessels. This project will demonstrate the following aspects: (A) Design, Fabrication and Assembly; (B) Transport and Installation, namely the submergence process; (C) Operation and Maintenance while supporting a working wind turbine; (D) Performance of the foundation and wind turbine vis-à-vis estimations; (E) Decommissioning and “post operation” analysis.
The overall goals of project DEMOGRAVI3 are: (1) To take the technology of the referred self-buoyant gravity based foundation concept from TRL 5 to TRL 7 (2) To demonstrate it is a technically viable solution to support offshore wind turbines, namely by confirming its performance estimates; (3) To demonstrate that this technology will attain an affordable LCOE in the medium term; (4) To demonstrate that this concept is a sustainable technology option to achieve the energy targets in the EU; (5) To create innovative and sustainable business models that maximize value creation while minimizing risks; (6) To further develop the technology for improved design, deployment and O&M; (7) To disseminate project results globally, namely opening its demonstration site for educational purposes, namely under the framework of the EUREC Master on Renewable Energy and KIC InnoEnergy Master on Energy Engineering and Management, and positioning Europe and European Institutions (Companies and Academia) as global leaders in offshore wind foundations
The technology is also likely to nurture the development of the industrial capacity to produce components and systems and opening of new opportunities in Europe, since the project includes the development of several activities in Europe (contributions to new codes and standards, Development of novel monitoring and inspection techniques applicable to other offshore technologies, just to name a couple). Moreover, DEMOGRAVI3 would help to strengthen the European industrial technology base, thereby creating growth and jobs in Europe, by leveraging on the fast growing offshore wind industry and contributing to foster European jobs with all activities concerning DEMOGRAVI3. Finally the project would have a very relevant impact in solving the global climate and energy challenges by contributing to increase the wind capacity in Europe.